Friction-clutch



(No Model.)

W. .H. EDDY.

FRICTION CLUTCH.

No. 285,593. Patented Sept. 25, 1883.

N. PEYEns Phola-utm n m Wiwngtnn. u. c.

.by the set-screw c, Fig. 2.

UNITED STATES:

PATENT Orricn.

WILLIAM H. EDDY, OF WORCESTER, MASSACHUSETTS.

FRICTION-CLUTCH.

SPECIFICATION forming part of Letters Patent No. 285,593, dated September 25, 1883.

' Application filed May 5,1883. (No model.)

To all whom it may concern:

Be it known thatI, XVILLIA H. EDDY, a citizen of the United States, residing at Worcester, in the county of \Vorcesterand State of Massachusetts, have invented a new and useful Improvement in Friction-Clutches, of which the following is a specification, in which the nature and objects of my invention are fully setforth, and illustrated in the accompanying drawings, in which Figure 1 shows a perspective view of a beltpulley containing my improved clutch. Fig. 2 represents a top view of the. same, with the rim or face partially removed, showing the expanding friction-ring'and the manner of operating it. Fig. 3 is a sectional view on line at m, Fig. 2. Fig. 4 a sectional view on a line dividing the shaft, and Fig. 5 shows the disk 13.

Similar letters refer to similar parts in the several views.

A is a belt-pulley running loose on the shaft A A. B is a disk attached to the shaft A Upon the side of the disk B is, an elastic metallic ring, F, out apart at a a and having on opposite sides the slots Ic k, through which the pins 9 g in the disk B, Fig. 5, pass loosely, thereby causing the ring F and disk B to rotate together. Attached to the disk B, and placed opposite the opening at n in the ring F, is a hub, O, which carries the rotating spindle a. The inner end of the spindle terminates in a fiat blade, e, extending between the ends a n of the ring F, and the outer end has an arm or dog, I), at tached to the spindle a by a pin or set-screw and extending past the shaft A, having in its end the adjusting-screwd. (Best shown by the broken lines in Fig. 5.) To the web Dof the pulley A, I attach the circulan flange or shell K, which incloses the elastic ring F, space being left between the two to allow the independent 7 rotation of either without friction.

It will be readily seen that in the position of the several parts, as described, the disk B with its ring F and spindle a with arm I) are attached to and will revolve with the shaft A,

while the pulley A remains at rest, or the pulley maybe made to revolve and the shaft A remainat rest. J

Sliding upon the shaft A, and operated by any suitable shifting device, is the cone E,

which may be passed beneath the arm or dog I), the set-screw a sliding upon the cone, thereby causing a partial rotation of the spindle 'a and blade 6 between the ends a n of the elastic ring F, as shown in Fig. 3, in which the arrow f indicates the direction of rotation, the lower edge of theblade pressing against the end a and the upper edge against the end a,

spreading them apart in the direction of the arrows ff, and expanding the ring F against the inner surface of the flange K on the pulley A with sufficient pressure to cause the ring and pulley to turn togther. When the cone E is removed from beneath the arm b, the elasticity of the ring F will bringthe ends a n together,

disconnecting it from the flange K and reversing the motion of the spindle a,bringingthe arm binproper position to be again actuated by the cone E. In order to accomplish this, however, the blade 6 must not be turned so far as to stand at right angles to the ends a a, as that would cause the elastic force of the ring to press against the edges of the blade in a line with the center of the spindle, which would obviously prevent the ends at a from coming together. pansion of the ring F with aslight rotation of the blade e, I increase the radial width of the ring where it is severed, scam to increase the face of the ends a a and permit the use of a wider blade. In expandingthe ring Fthe opposite edges of the blade press against the opposing faces of the ends a n with opposite andequal force, producing statical or balanced pressures against the ends of the ring simultaneously, and relieving the spindle a from strain and wear. The expansion of the ring may be increased by means of the adjustingscrew 12, which will allow any wear between In order to secure the requisite eX erating the elastic ring by a rotating device acting against both ends it n of the elastic ring simultaneously and with balanced pressures,

and also in causing the recoil of the elastic ring to reverse the motion of the spindle and set the arrnin properposition to be actuated by the cone.

WVhat I claim as my invention, and desire to secure by Letters Patent, is-

1. The combinatiomin a fricti oil-clutch, with a flange or rim, K, and an expansible elastic ring, F, inclosed therein, of a rotating blade with its axis of rotation between the opposite edges, and placed between the ends of the divided elastic ring so its edges will press against and slide upon the opposing ends of the ring, as described, and for the purpose set forth.

2. The combination, in a friction-clutch, with a flange or rim K, of an expansible elastic ring, F, with its ends n n enlarged, so as to increase the radial length of the opposing faces, and a rotating-blade, e, placed between the ends at n, and having its axis of rotation between its opposite edges, as and for the purposes set forth.

3. The combination, in a friction-clutch, of the flange or rim K, expansible elastic ring F, with slots k k, disk B, attached to the shaft, and having driving-pins g g, and the rotating blade 0, as and for the purpose set forth.

4. The combination, in afriction-clutch, of the cut elastic ring E with ends it n, ro tating blade 6 on the spindle a, disk 13, attached to the shaft and having the driving pins 9 g entering the slots k k in the ring F, and hub C, carrying the spindle a, all arranged and operating as described, and for the purpose set forth.

5. The combination of the elastic ring F, with ends a n, rotating spindle a, with blade 6, extending between the ends a a, and having an arm carrying an adjusting-screw, (Z, and cone E, sliding on the shaft A, as and for the purpose set forth.

XVILLIAM H. EDDY.

\Vitnesses:

R. B. FOWLER, GEO. E. SMITH. 

